Abstract It is well known that Marshall had great difficulty in organizing his work after the Principles. The promised second volume never came, and for books eventually were published, Industry Trade (1919) Money, Credit, Commerce (1923), was at pains to find right mode of expression research. In introduction Principles, explained reliance on partial equilibrium analysis and, more generally, c...

Biphotons with narrow bandwidth and long coherence time can enhance light-atom interaction, which leads to strong coupling between photonic and atomic qubits. Such strong coupling is desirable in quantum information processing, quantum storage and communication. In particular, paired photons with a long coherence time over submicroseconds facilitate the direct manipulation of biphoton wavefunct...

A technique for calculation of variability coherence at different timescales performed directly in the time domain is introduced. Simulations are made to compare the coherence spectrum derived by the time domain technique with the coherence function by Fourier analysis. The results indicate that in comparison with the Fourier analysis the time domain technique is more powerful for revealing sig...

A quantum theory of a two and three-level laser with injected atomic coherence is developed by using a density operator method, to the best of our knowledge, for the first time. The initial atomic coherence plays an essential role. At steady state, the equation of motion for the density operator yields to exhibit laser without inversion and a phase locking but no threshold for the laser fie...

Despite intergovernmental calls for greater policy coherence to tackle rising non-communicable diseases (NCDs), there has been a striking lack of coherence internationally and nationally between trade and health sectors. In this commentary, I explore the arguments by Lenucha and Thow in relation to barriers for greater coherence for NCDs, apply them to regional trade ag...

In the present paper results given in Natvig (1990) are generalized to a multistate, strongly coherent, nonrepairable system of independent components by considering the reduction in remaining system time above a certain state due to a jump downwards of a component. This reduction also equals the increase in remaining system time above a certain state due to a minimal repair of the component at...

Theory of coherence and polarization in stationary random electromagnetic fields is reviewed. Degree of coherence for electromagnetic fields is examined in the space–time domain and the conditions for complete coherence are discussed. The space–time domain correlation matrix is then transformed to the corresponding space–frequency domain quantity, the cross-spectral density matrix, which is the...